Finishing-joint in wooden walls or ceilings



' (No Model.) I

l w G. KNOW-ER. l

FINISHING JOINT? IN WOODEN WALLS ORUEILINGS;

Elm 617,701. Patented'Apr. s, 1894.

A TTORNE Y8.

IO larly to the construction of the joints of such UNITE-D STATES enonen KNQWER, OFIGRE'ENWOOD, Wisconsin;

PATENT OFFICE.

FINISHING-JOINT'INJWOYODEN WALLS QR-CEIL'INFGS.

SPECIFICATION torming part-of Letters Patent No. 517,701, dated April 3, 1894.

' Applicationfiled July 11,1893. Serial masons. (N model.)

"To all whom it may concern:

Be it known that I, GEORGE KNOWER, of Greenwood, in the'countyof- Taylor and State of Wisconsin, have invented certain new and useful, Improvements in Finishing-Joints in Wooden Walls or Ceilings, of which the following is'a full, clear, and exact description.

My invention relates to improvements in the construction of wooden wallsand ceilings which are subject to shrinkage, and particustrnctures. 7

The object'of my invention is to produce a very cheap, simple and flexible batten, p,ad-

ding, or fitting, adapted in its parts to be made of paper, which may be convenientlyapplied to said joints and-which mayfold up tightly when the joints are newand tight, and will lutely air-tight.

' To theseends my invention consists of certain features of construction and combinations of parts, as will be hereinafter described and claimed.

Referenceis to be had to the accompanying drawings, forming a part of this specification,

' in which similar figures of reference indicate corresponding'parts in all the views.

Figure l is a cross section of two wooden pieces and of my tubular flexible padding, or joint-closer, arranged between them; Fig; 2 is a cross section of the same parts, showing the position assumed by the padding when the woodwork has shrunken. Fig. 3 is a cross section of the same parts, with the addition of a hollow flexible battenor exterior covering for the joint.

My improved tubular padding, or joint closer,is constructed of two parts, namely; a strip, 15, which lies in the crack, 11,'-between the boards, 10, and has, preferably, edge flanges, 16, to overlap the boards and be seoured'thereto, the strip having alsoa centrallongitudinal fold 17; and [a strip, 18, which lies beneath the strip, 15, and is firmly cemented thereto, this latter strip having also inulates. '7 The padding thus formed is tubular but ex pansible, and when the joint is-tight 'the folds17 and 19 lie compressed, as shown in Fig. 1; but, as the boards 1 0 shrink, the crack, 11, grows larger, and the folds, 17, and

19, straighten out, as shown in Fig. 2, so that the padding at all times effects an air-tight closure and preserves a dead air space be tween the pieces or boards, 10. I

In Fig, 3, the strips, 15 and 18, are used exactly as illustrated in Fig. 2, except that the flanges, 16, are dispensed with and a hollow batten, 12, is laid directly overthe crack or joint, 11, so as to cover the strip, 15, and a. \.covering, 13, is'applied as shown.

This bat ten incloses a dead airspace and forms a positive protection for the joint; yet it is adapted to stretch transversely and flatten when the joint expands. I prefer to form the padding and batten of paper, but other materials may be successfully employed.

What I claim is- 1. The combination, with the fiat, parallel the sidesof the strip, 15, while in, the edges I of the boards opposite these strips are grooves, .20, in whichthe surplus glue or cement accuadjacent grooved edges of ceiling boards, or

pieces, of a padding composed of two foldable, paper strips whose side edges are pasted to the opposite edges of said boards but separated as shown, whereby a dead-air space is formed between said strips, as specified,

2. The combination, with parallel and adjacent edges of wooden ceiling boards, or

ieces of a a er addin or 'oint-closer composed of strips one of which is pasted to the body of the other parallel to its side edges, thus forming an air-containing tube, and the edges of such other strip being secured to the woodenpieces, as shown and described.

GEORGE KNOWER.

itnesses:

OoRAB. KNOWE J os. BREHM. 

